German Chancellor Angela Merkel will meet with Russian President Vladimir Putin next week, a government spokesperson confirmed on Friday, with the murder of Georgian activist Zelimkhan Khangoshvili at the center of a diplomatic dispute between the two nations.

The meeting is set to take place in Paris on Monday ahead of a summit on Ukraine hosted by French President Emmanuel Macron.

On Friday, Merkel’s chief of staff, Helge Braun, admitted he was dismayed at the furious reaction from Moscow over the expulsions. Earlier, Russia’s ambassador to Germany dismissed the accusations of involvement in the murder while also threatening consequences for expulsions.

But Braun told news magazine: “We see the expulsions as an extremely urgent signal to the Russians to comprehensively support us in establishing the identity and personal background of the suspected perpetrator.”

He added: “Against the backdrop over months of a lack of support, I have no understanding for the fact that Russia is outraged and is considering countermeasures.”

Russian suspect in custody

A 49-year-old man with a Russian passport was arrested as he fled the murder scene in the German capital. The suspect, also implicated in the murder of a Russian businessman in 2013, has, thus far, maintained his right to keep silent.

Until now, the Kremlin has been reluctant to aid investigations — “despite repeated calls to do so from high-ranking German officials,” according to the German Foreign Ministry.

An investigation by published on Friday revealed that the suspected assassin was probably a member of one of Russia’s Federal Security Service’s (FSB) spetznaz units. It found evidence that he was recruited as a hit man as he faced the prospect of multiple charges, which would be expunged if he agreed, a reportedly common method of recruitment for extraterritorial assassinations.